I'm reluctant to swap my blue and black Wico handles for red ones as it was a lot of hassle getting hold of them. I actually prefer red, but I'd like to keep my options open.
However I would be interested in purchasing your red handles if they are new / nearly new and genuine Wico parts.
If you want black or blue handles then I would suggest you purchase complete joysticks from
www.videoconnect.com. They still sell Wico joysticks in those colours. Unfortunately they wouldn't sell me red ones.....